Commitments And Contingencies - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2020	Dec. 31, 2018
Loss Contingencies [Line Items]
Notes Payable, Fair Value Disclosure	$ 697,000,000
Letters of Credit Outstanding, Amount	46,000,000	$ 51,000,000
Cash and Cash Equivalents, at Carrying Value	538,114,000	452,016,000	$ 373,655,000		$ 354,259,000
Derivative, Amount of Hedged Item				$ 200,000,000
Proceeds from Sale of Debt Securities, Available-for-sale	4,486,000	0	0
Available-for-sale Securities, Debt Securities	6,400,000	10,000,000
Foreign Currency Transaction Gain (Loss), before Tax	(8,400,000)	(14,000,000)	(6,300,000)
Debt Securities, Available-for-sale, Realized Gain	500,000
Debt Securities, Available-for-sale, Unrealized Gain	200,000
Debt Securities, Available-for-sale, Current	6,229,000	10,179,000
Contract Assets, Allowance for Credit Losses, Write Off	(38,032,000)
Loss Contingency Accrual	(11,000,000)
Accounts Receivable, Allowance for Credit Loss, Writeoff	29,549,000
Manufactured Products
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	33,000,000
Contract Assets, Allowance for Credit Losses, Write Off	(38,000,000)
Accounts Receivable, Allowance for Credit Loss, Writeoff	29,549,000
Accounts Receivable [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	37,000,000
Angola, Kwanza
Loss Contingencies [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	(4,500,000)	(2,800,000)	(4,800,000)
Brazil, Brazil Real
Loss Contingencies [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	(200,000)	(7,300,000)	$ (700,000)
Angola, Kwanza
Loss Contingencies [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 1,000,000	4,700,000
CHINA | Accounts Receivable [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		11,000,000
CHINA | Financing Receivable
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		$ 40,000,000